1 /*- 2 * Copyright (c) 2002-2003 Taku YAMAMOTO <taku@cent.saitama-u.ac.jp> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD: head/sys/dev/acpica/acpi_video.c 258780 2013-11-30 22:17:27Z eadler $ 27 * $Id: acpi_vid.c,v 1.4 2003/10/13 10:07:36 taku Exp $ 28 */ 29 30 #include <sys/param.h> 31 #include <sys/kernel.h> 32 #include <sys/malloc.h> 33 #include <sys/module.h> 34 #include <sys/bus.h> 35 #include <sys/power.h> 36 #include <sys/queue.h> 37 #include <sys/sysctl.h> 38 39 #include "acpi.h" 40 #include "acpivar.h" 41 42 /* ACPI video extension driver. */ 43 struct acpi_video_output { 44 ACPI_HANDLE handle; 45 UINT32 adr; 46 STAILQ_ENTRY(acpi_video_output) vo_next; 47 struct { 48 int num; 49 STAILQ_ENTRY(acpi_video_output) next; 50 } vo_unit; 51 int vo_brightness; 52 int vo_fullpower; 53 int vo_economy; 54 int vo_numlevels; 55 int *vo_levels; 56 struct sysctl_ctx_list vo_sysctl_ctx; 57 struct sysctl_oid *vo_sysctl_tree; 58 }; 59 60 STAILQ_HEAD(acpi_video_output_queue, acpi_video_output); 61 62 struct acpi_video_softc { 63 device_t device; 64 ACPI_HANDLE handle; 65 struct acpi_video_output_queue vid_outputs; 66 eventhandler_tag vid_pwr_evh; 67 }; 68 69 /* interfaces */ 70 static int acpi_video_modevent(struct module*, int, void *); 71 static void acpi_video_identify(driver_t *driver, device_t parent); 72 static int acpi_video_probe(device_t); 73 static int acpi_video_attach(device_t); 74 static int acpi_video_detach(device_t); 75 static int acpi_video_resume(device_t); 76 static int acpi_video_shutdown(device_t); 77 static void acpi_video_notify_handler(ACPI_HANDLE, UINT32, void *); 78 static void acpi_video_power_profile(void *); 79 static void acpi_video_bind_outputs(struct acpi_video_softc *); 80 static struct acpi_video_output *acpi_video_vo_init(UINT32); 81 static void acpi_video_vo_bind(struct acpi_video_output *, ACPI_HANDLE); 82 static void acpi_video_vo_destroy(struct acpi_video_output *); 83 static int acpi_video_vo_check_level(struct acpi_video_output *, int); 84 static void acpi_video_vo_notify_handler(ACPI_HANDLE, UINT32, void *); 85 static int acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS); 86 static int acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS); 87 static int acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS); 88 static int acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS); 89 90 /* operations */ 91 static void vid_set_switch_policy(ACPI_HANDLE, UINT32); 92 static int vid_enum_outputs(ACPI_HANDLE, 93 void(*)(ACPI_HANDLE, UINT32, void *), void *); 94 static int vo_get_brightness_levels(ACPI_HANDLE, int **); 95 static int vo_get_brightness(ACPI_HANDLE); 96 static void vo_set_brightness(ACPI_HANDLE, int); 97 static UINT32 vo_get_device_status(ACPI_HANDLE); 98 static UINT32 vo_get_graphics_state(ACPI_HANDLE); 99 static void vo_set_device_state(ACPI_HANDLE, UINT32); 100 101 /* events */ 102 #define VID_NOTIFY_SWITCHED 0x80 103 #define VID_NOTIFY_REPROBE 0x81 104 #define VID_NOTIFY_CYCLE_BRN 0x85 105 #define VID_NOTIFY_INC_BRN 0x86 106 #define VID_NOTIFY_DEC_BRN 0x87 107 #define VID_NOTIFY_ZERO_BRN 0x88 108 109 /* _DOS (Enable/Disable Output Switching) argument bits */ 110 #define DOS_SWITCH_MASK 3 111 #define DOS_SWITCH_BY_OSPM 0 112 #define DOS_SWITCH_BY_BIOS 1 113 #define DOS_SWITCH_LOCKED 2 114 #define DOS_BRIGHTNESS_BY_OSPM (1 << 2) 115 116 /* _DOD and subdev's _ADR */ 117 #define DOD_DEVID_MASK 0x0f00 118 #define DOD_DEVID_MASK_FULL 0xffff 119 #define DOD_DEVID_MASK_DISPIDX 0x000f 120 #define DOD_DEVID_MASK_DISPPORT 0x00f0 121 #define DOD_DEVID_MONITOR 0x0100 122 #define DOD_DEVID_LCD 0x0110 123 #define DOD_DEVID_TV 0x0200 124 #define DOD_DEVID_EXT 0x0300 125 #define DOD_DEVID_INTDFP 0x0400 126 #define DOD_BIOS (1 << 16) 127 #define DOD_NONVGA (1 << 17) 128 #define DOD_HEAD_ID_SHIFT 18 129 #define DOD_HEAD_ID_BITS 3 130 #define DOD_HEAD_ID_MASK \ 131 (((1 << DOD_HEAD_ID_BITS) - 1) << DOD_HEAD_ID_SHIFT) 132 #define DOD_DEVID_SCHEME_STD (1 << 31) 133 134 /* _BCL related constants */ 135 #define BCL_FULLPOWER 0 136 #define BCL_ECONOMY 1 137 138 /* _DCS (Device Currrent Status) value bits and masks. */ 139 #define DCS_EXISTS (1 << 0) 140 #define DCS_ACTIVE (1 << 1) 141 #define DCS_READY (1 << 2) 142 #define DCS_FUNCTIONAL (1 << 3) 143 #define DCS_ATTACHED (1 << 4) 144 145 /* _DSS (Device Set Status) argument bits and masks. */ 146 #define DSS_INACTIVE 0 147 #define DSS_ACTIVE (1 << 0) 148 #define DSS_SETNEXT (1 << 30) 149 #define DSS_COMMIT (1 << 31) 150 151 static device_method_t acpi_video_methods[] = { 152 DEVMETHOD(device_identify, acpi_video_identify), 153 DEVMETHOD(device_probe, acpi_video_probe), 154 DEVMETHOD(device_attach, acpi_video_attach), 155 DEVMETHOD(device_detach, acpi_video_detach), 156 DEVMETHOD(device_resume, acpi_video_resume), 157 DEVMETHOD(device_shutdown, acpi_video_shutdown), 158 159 DEVMETHOD_END 160 }; 161 162 static driver_t acpi_video_driver = { 163 "acpi_video", 164 acpi_video_methods, 165 sizeof(struct acpi_video_softc), 166 }; 167 168 static devclass_t acpi_video_devclass; 169 170 DRIVER_MODULE(acpi_video, vgapci, acpi_video_driver, acpi_video_devclass, 171 acpi_video_modevent, NULL); 172 MODULE_DEPEND(acpi_video, acpi, 1, 1, 1); 173 174 static struct sysctl_ctx_list acpi_video_sysctl_ctx; 175 static struct sysctl_oid *acpi_video_sysctl_tree; 176 static struct acpi_video_output_queue crt_units, tv_units, 177 ext_units, lcd_units, other_units; 178 179 /* 180 * The 'video' lock protects the hierarchy of video output devices 181 * (the video "bus"). The 'video_output' lock protects per-output 182 * data is equivalent to a softc lock for each video output. 183 */ 184 ACPI_SERIAL_DECL(video, "ACPI video"); 185 ACPI_SERIAL_DECL(video_output, "ACPI video output"); 186 static MALLOC_DEFINE(M_ACPIVIDEO, "acpivideo", "ACPI video extension"); 187 188 static int 189 acpi_video_modevent(struct module *mod __unused, int evt, void *cookie __unused) 190 { 191 int err; 192 193 err = 0; 194 switch (evt) { 195 case MOD_LOAD: 196 sysctl_ctx_init(&acpi_video_sysctl_ctx); 197 STAILQ_INIT(&crt_units); 198 STAILQ_INIT(&tv_units); 199 STAILQ_INIT(&ext_units); 200 STAILQ_INIT(&lcd_units); 201 STAILQ_INIT(&other_units); 202 break; 203 case MOD_UNLOAD: 204 sysctl_ctx_free(&acpi_video_sysctl_ctx); 205 acpi_video_sysctl_tree = NULL; 206 break; 207 default: 208 err = EINVAL; 209 } 210 211 return (err); 212 } 213 214 static void 215 acpi_video_identify(driver_t *driver, device_t parent) 216 { 217 218 if (device_find_child(parent, "acpi_video", -1) == NULL) 219 device_add_child(parent, "acpi_video", -1); 220 } 221 222 static int 223 acpi_video_probe(device_t dev) 224 { 225 ACPI_HANDLE devh, h; 226 ACPI_OBJECT_TYPE t_dos; 227 228 devh = acpi_get_handle(dev); 229 if (acpi_disabled("video") || 230 ACPI_FAILURE(AcpiGetHandle(devh, "_DOD", &h)) || 231 ACPI_FAILURE(AcpiGetHandle(devh, "_DOS", &h)) || 232 ACPI_FAILURE(AcpiGetType(h, &t_dos)) || 233 t_dos != ACPI_TYPE_METHOD) 234 return (ENXIO); 235 236 device_set_desc(dev, "ACPI video extension"); 237 return (0); 238 } 239 240 static int 241 acpi_video_attach(device_t dev) 242 { 243 struct acpi_softc *acpi_sc; 244 struct acpi_video_softc *sc; 245 246 sc = device_get_softc(dev); 247 248 acpi_sc = devclass_get_softc(devclass_find("acpi"), 0); 249 if (acpi_sc == NULL) 250 return (ENXIO); 251 ACPI_SERIAL_INIT(video); 252 ACPI_SERIAL_INIT(video_output); 253 ACPI_SERIAL_BEGIN(video); 254 if (acpi_video_sysctl_tree == NULL) { 255 acpi_video_sysctl_tree = SYSCTL_ADD_NODE(&acpi_video_sysctl_ctx, 256 SYSCTL_CHILDREN(acpi_sc->acpi_sysctl_tree), 257 OID_AUTO, "video", CTLFLAG_RD, 0, 258 "video extension control"); 259 } 260 ACPI_SERIAL_END(video); 261 262 sc->device = dev; 263 sc->handle = acpi_get_handle(dev); 264 STAILQ_INIT(&sc->vid_outputs); 265 266 AcpiInstallNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, 267 acpi_video_notify_handler, sc); 268 sc->vid_pwr_evh = EVENTHANDLER_REGISTER(power_profile_change, 269 acpi_video_power_profile, sc, 0); 270 271 ACPI_SERIAL_BEGIN(video); 272 acpi_video_bind_outputs(sc); 273 ACPI_SERIAL_END(video); 274 275 /* 276 * Notify the BIOS that we want to switch both active outputs and 277 * brightness levels. 278 */ 279 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_OSPM | 280 DOS_BRIGHTNESS_BY_OSPM); 281 282 acpi_video_power_profile(sc); 283 284 return (0); 285 } 286 287 static int 288 acpi_video_detach(device_t dev) 289 { 290 struct acpi_video_softc *sc; 291 struct acpi_video_output *vo, *vn; 292 293 sc = device_get_softc(dev); 294 295 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS); 296 EVENTHANDLER_DEREGISTER(power_profile_change, sc->vid_pwr_evh); 297 AcpiRemoveNotifyHandler(sc->handle, ACPI_DEVICE_NOTIFY, 298 acpi_video_notify_handler); 299 300 ACPI_SERIAL_BEGIN(video); 301 STAILQ_FOREACH_MUTABLE(vo, &sc->vid_outputs, vo_next, vn) { 302 acpi_video_vo_destroy(vo); 303 } 304 ACPI_SERIAL_END(video); 305 306 return (0); 307 } 308 309 static int 310 acpi_video_resume(device_t dev) 311 { 312 struct acpi_video_softc *sc; 313 struct acpi_video_output *vo, *vn; 314 int level; 315 316 sc = device_get_softc(dev); 317 318 /* Restore brightness level */ 319 ACPI_SERIAL_BEGIN(video); 320 ACPI_SERIAL_BEGIN(video_output); 321 STAILQ_FOREACH_MUTABLE(vo, &sc->vid_outputs, vo_next, vn) { 322 if ((vo->adr & DOD_DEVID_MASK_FULL) != DOD_DEVID_LCD && 323 (vo->adr & DOD_DEVID_MASK) != DOD_DEVID_INTDFP) 324 continue; 325 326 if ((vo_get_device_status(vo->handle) & DCS_ACTIVE) == 0) 327 continue; 328 329 level = vo_get_brightness(vo->handle); 330 if (level != -1) 331 vo_set_brightness(vo->handle, level); 332 } 333 ACPI_SERIAL_END(video_output); 334 ACPI_SERIAL_END(video); 335 336 return (0); 337 } 338 339 static int 340 acpi_video_shutdown(device_t dev) 341 { 342 struct acpi_video_softc *sc; 343 344 sc = device_get_softc(dev); 345 vid_set_switch_policy(sc->handle, DOS_SWITCH_BY_BIOS); 346 347 return (0); 348 } 349 350 static void 351 acpi_video_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 352 { 353 struct acpi_video_softc *sc; 354 struct acpi_video_output *vo, *vo_tmp; 355 ACPI_HANDLE lasthand; 356 UINT32 dcs, dss, dss_p; 357 358 sc = (struct acpi_video_softc *)context; 359 360 switch (notify) { 361 case VID_NOTIFY_SWITCHED: 362 dss_p = 0; 363 lasthand = NULL; 364 ACPI_SERIAL_BEGIN(video); 365 ACPI_SERIAL_BEGIN(video_output); 366 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 367 dss = vo_get_graphics_state(vo->handle); 368 dcs = vo_get_device_status(vo->handle); 369 if (!(dcs & DCS_READY)) 370 dss = DSS_INACTIVE; 371 if (((dcs & DCS_ACTIVE) && dss == DSS_INACTIVE) || 372 (!(dcs & DCS_ACTIVE) && dss == DSS_ACTIVE)) { 373 if (lasthand != NULL) 374 vo_set_device_state(lasthand, dss_p); 375 dss_p = dss; 376 lasthand = vo->handle; 377 } 378 } 379 if (lasthand != NULL) 380 vo_set_device_state(lasthand, dss_p|DSS_COMMIT); 381 ACPI_SERIAL_END(video_output); 382 ACPI_SERIAL_END(video); 383 break; 384 case VID_NOTIFY_REPROBE: 385 ACPI_SERIAL_BEGIN(video); 386 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) 387 vo->handle = NULL; 388 acpi_video_bind_outputs(sc); 389 STAILQ_FOREACH_MUTABLE(vo, &sc->vid_outputs, vo_next, vo_tmp) { 390 if (vo->handle == NULL) { 391 STAILQ_REMOVE(&sc->vid_outputs, vo, 392 acpi_video_output, vo_next); 393 acpi_video_vo_destroy(vo); 394 } 395 } 396 ACPI_SERIAL_END(video); 397 break; 398 default: 399 device_printf(sc->device, "unknown notify event 0x%x\n", 400 notify); 401 } 402 } 403 404 static void 405 acpi_video_power_profile(void *context) 406 { 407 int state; 408 struct acpi_video_softc *sc; 409 struct acpi_video_output *vo; 410 411 sc = context; 412 state = power_profile_get_state(); 413 if (state != POWER_PROFILE_PERFORMANCE && 414 state != POWER_PROFILE_ECONOMY) 415 return; 416 417 ACPI_SERIAL_BEGIN(video); 418 ACPI_SERIAL_BEGIN(video_output); 419 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 420 if (vo->vo_levels != NULL && vo->vo_brightness == -1) 421 vo_set_brightness(vo->handle, 422 state == POWER_PROFILE_ECONOMY ? 423 vo->vo_economy : vo->vo_fullpower); 424 } 425 ACPI_SERIAL_END(video_output); 426 ACPI_SERIAL_END(video); 427 } 428 429 static void 430 acpi_video_bind_outputs_subr(ACPI_HANDLE handle, UINT32 adr, void *context) 431 { 432 struct acpi_video_softc *sc; 433 struct acpi_video_output *vo; 434 435 ACPI_SERIAL_ASSERT(video); 436 sc = context; 437 438 STAILQ_FOREACH(vo, &sc->vid_outputs, vo_next) { 439 if (vo->adr == adr) { 440 acpi_video_vo_bind(vo, handle); 441 return; 442 } 443 } 444 vo = acpi_video_vo_init(adr); 445 if (vo != NULL) { 446 acpi_video_vo_bind(vo, handle); 447 STAILQ_INSERT_TAIL(&sc->vid_outputs, vo, vo_next); 448 } 449 } 450 451 static void 452 acpi_video_bind_outputs(struct acpi_video_softc *sc) 453 { 454 ACPI_SERIAL_ASSERT(video); 455 vid_enum_outputs(sc->handle, acpi_video_bind_outputs_subr, sc); 456 } 457 458 static struct acpi_video_output * 459 acpi_video_vo_init(UINT32 adr) 460 { 461 struct acpi_video_output *vn, *vo, *vp; 462 int n, x; 463 char name[8], env[32]; 464 const char *type, *desc; 465 struct acpi_video_output_queue *voqh; 466 467 ACPI_SERIAL_ASSERT(video); 468 469 switch (adr & DOD_DEVID_MASK) { 470 case DOD_DEVID_MONITOR: 471 if ((adr & DOD_DEVID_MASK_FULL) == DOD_DEVID_LCD) { 472 /* DOD_DEVID_LCD is a common, backward compatible ID */ 473 desc = "Internal/Integrated Digital Flat Panel"; 474 type = "lcd"; 475 voqh = &lcd_units; 476 } else { 477 desc = "VGA CRT or VESA Compatible Analog Monitor"; 478 type = "crt"; 479 voqh = &crt_units; 480 } 481 break; 482 case DOD_DEVID_TV: 483 desc = "TV/HDTV or Analog-Video Monitor"; 484 type = "tv"; 485 voqh = &tv_units; 486 break; 487 case DOD_DEVID_EXT: 488 desc = "External Digital Monitor"; 489 type = "ext"; 490 voqh = &ext_units; 491 break; 492 case DOD_DEVID_INTDFP: 493 desc = "Internal/Integrated Digital Flat Panel"; 494 type = "lcd"; 495 voqh = &lcd_units; 496 break; 497 default: 498 desc = "unknown output"; 499 type = "out"; 500 voqh = &other_units; 501 } 502 503 n = 0; 504 vp = NULL; 505 STAILQ_FOREACH(vn, voqh, vo_unit.next) { 506 if (vn->vo_unit.num != n) 507 break; 508 vp = vn; 509 n++; 510 } 511 512 ksnprintf(name, sizeof(name), "%s%d", type, n); 513 514 vo = kmalloc(sizeof(*vo), M_ACPIVIDEO, M_NOWAIT); 515 if (vo != NULL) { 516 vo->handle = NULL; 517 vo->adr = adr; 518 vo->vo_unit.num = n; 519 vo->vo_brightness = -1; 520 vo->vo_fullpower = -1; /* TODO: override with tunables */ 521 vo->vo_economy = -1; 522 vo->vo_numlevels = 0; 523 vo->vo_levels = NULL; 524 ksnprintf(env, sizeof(env), "hw.acpi.video.%s.fullpower", name); 525 if (kgetenv_int(env, &x)) 526 vo->vo_fullpower = x; 527 ksnprintf(env, sizeof(env), "hw.acpi.video.%s.economy", name); 528 if (kgetenv_int(env, &x)) 529 vo->vo_economy = x; 530 531 sysctl_ctx_init(&vo->vo_sysctl_ctx); 532 if (vp != NULL) 533 STAILQ_INSERT_AFTER(voqh, vp, vo, vo_unit.next); 534 else 535 STAILQ_INSERT_TAIL(voqh, vo, vo_unit.next); 536 if (acpi_video_sysctl_tree != NULL) 537 vo->vo_sysctl_tree = 538 SYSCTL_ADD_NODE(&vo->vo_sysctl_ctx, 539 SYSCTL_CHILDREN(acpi_video_sysctl_tree), 540 OID_AUTO, name, CTLFLAG_RD, 0, desc); 541 if (vo->vo_sysctl_tree != NULL) { 542 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 543 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 544 OID_AUTO, "active", 545 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 546 acpi_video_vo_active_sysctl, "I", 547 "current activity of this device"); 548 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 549 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 550 OID_AUTO, "brightness", 551 CTLTYPE_INT|CTLFLAG_RW, vo, 0, 552 acpi_video_vo_bright_sysctl, "I", 553 "current brightness level"); 554 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 555 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 556 OID_AUTO, "fullpower", 557 CTLTYPE_INT|CTLFLAG_RW, vo, 558 POWER_PROFILE_PERFORMANCE, 559 acpi_video_vo_presets_sysctl, "I", 560 "preset level for full power mode"); 561 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 562 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 563 OID_AUTO, "economy", 564 CTLTYPE_INT|CTLFLAG_RW, vo, 565 POWER_PROFILE_ECONOMY, 566 acpi_video_vo_presets_sysctl, "I", 567 "preset level for economy mode"); 568 SYSCTL_ADD_PROC(&vo->vo_sysctl_ctx, 569 SYSCTL_CHILDREN(vo->vo_sysctl_tree), 570 OID_AUTO, "levels", 571 CTLTYPE_INT|CTLFLAG_RD, vo, 0, 572 acpi_video_vo_levels_sysctl, "I", 573 "supported brightness levels"); 574 } else 575 kprintf("%s: sysctl node creation failed\n", type); 576 } else 577 kprintf("%s: softc allocation failed\n", type); 578 579 if (bootverbose) { 580 kprintf("found %s(%x)", desc, adr & DOD_DEVID_MASK_FULL); 581 kprintf(", idx#%x", adr & DOD_DEVID_MASK_DISPIDX); 582 kprintf(", port#%x", (adr & DOD_DEVID_MASK_DISPPORT) >> 4); 583 if (adr & DOD_BIOS) 584 kprintf(", detectable by BIOS"); 585 if (adr & DOD_NONVGA) 586 kprintf(" (Non-VGA output device whose power " 587 "is related to the VGA device)"); 588 kprintf(", head #%d\n", 589 (adr & DOD_HEAD_ID_MASK) >> DOD_HEAD_ID_SHIFT); 590 } 591 return (vo); 592 } 593 594 static void 595 acpi_video_vo_bind(struct acpi_video_output *vo, ACPI_HANDLE handle) 596 { 597 ACPI_SERIAL_BEGIN(video_output); 598 if (vo->vo_levels != NULL) 599 AcpiOsFree(vo->vo_levels); 600 vo->handle = handle; 601 vo->vo_numlevels = vo_get_brightness_levels(handle, &vo->vo_levels); 602 if (vo->vo_numlevels >= 2) { 603 if (vo->vo_fullpower == -1 604 || acpi_video_vo_check_level(vo, vo->vo_fullpower) != 0) 605 /* XXX - can't deal with rebinding... */ 606 vo->vo_fullpower = vo->vo_levels[BCL_FULLPOWER]; 607 if (vo->vo_economy == -1 608 || acpi_video_vo_check_level(vo, vo->vo_economy) != 0) 609 /* XXX - see above. */ 610 vo->vo_economy = vo->vo_levels[BCL_ECONOMY]; 611 } 612 if (vo->vo_levels != NULL) 613 AcpiInstallNotifyHandler(handle, ACPI_DEVICE_NOTIFY, 614 acpi_video_vo_notify_handler, vo); 615 ACPI_SERIAL_END(video_output); 616 } 617 618 static void 619 acpi_video_vo_destroy(struct acpi_video_output *vo) 620 { 621 struct acpi_video_output_queue *voqh; 622 623 ACPI_SERIAL_ASSERT(video); 624 if (vo->vo_sysctl_tree != NULL) { 625 vo->vo_sysctl_tree = NULL; 626 sysctl_ctx_free(&vo->vo_sysctl_ctx); 627 } 628 if (vo->vo_levels != NULL) { 629 AcpiRemoveNotifyHandler(vo->handle, ACPI_DEVICE_NOTIFY, 630 acpi_video_vo_notify_handler); 631 AcpiOsFree(vo->vo_levels); 632 } 633 634 switch (vo->adr & DOD_DEVID_MASK) { 635 case DOD_DEVID_MONITOR: 636 voqh = &crt_units; 637 break; 638 case DOD_DEVID_TV: 639 voqh = &tv_units; 640 break; 641 case DOD_DEVID_EXT: 642 voqh = &ext_units; 643 break; 644 case DOD_DEVID_INTDFP: 645 voqh = &lcd_units; 646 break; 647 default: 648 voqh = &other_units; 649 } 650 STAILQ_REMOVE(voqh, vo, acpi_video_output, vo_unit.next); 651 kfree(vo, M_ACPIVIDEO); 652 } 653 654 static int 655 acpi_video_vo_check_level(struct acpi_video_output *vo, int level) 656 { 657 int i; 658 659 ACPI_SERIAL_ASSERT(video_output); 660 if (vo->vo_levels == NULL) 661 return (ENODEV); 662 for (i = 0; i < vo->vo_numlevels; i++) 663 if (vo->vo_levels[i] == level) 664 return (0); 665 return (EINVAL); 666 } 667 668 static void 669 acpi_video_vo_notify_handler(ACPI_HANDLE handle, UINT32 notify, void *context) 670 { 671 struct acpi_video_output *vo; 672 int i, j, level, new_level; 673 674 vo = context; 675 ACPI_SERIAL_BEGIN(video_output); 676 if (vo->handle != handle) 677 goto out; 678 679 switch (notify) { 680 case VID_NOTIFY_CYCLE_BRN: 681 if (vo->vo_numlevels <= 3) 682 goto out; 683 /* FALLTHROUGH */ 684 case VID_NOTIFY_INC_BRN: 685 case VID_NOTIFY_DEC_BRN: 686 case VID_NOTIFY_ZERO_BRN: 687 if (vo->vo_levels == NULL) 688 goto out; 689 level = vo_get_brightness(handle); 690 if (level < 0) 691 goto out; 692 break; 693 default: 694 kprintf("unknown notify event 0x%x from %s\n", 695 notify, acpi_name(handle)); 696 goto out; 697 } 698 699 new_level = level; 700 switch (notify) { 701 case VID_NOTIFY_CYCLE_BRN: 702 for (i = 2; i < vo->vo_numlevels; i++) 703 if (vo->vo_levels[i] == level) { 704 new_level = vo->vo_numlevels > i + 1 ? 705 vo->vo_levels[i + 1] : vo->vo_levels[2]; 706 break; 707 } 708 break; 709 case VID_NOTIFY_INC_BRN: 710 case VID_NOTIFY_DEC_BRN: 711 for (i = 0; i < vo->vo_numlevels; i++) { 712 j = vo->vo_levels[i]; 713 if (notify == VID_NOTIFY_INC_BRN) { 714 if (j > level && 715 (j < new_level || level == new_level)) 716 new_level = j; 717 } else { 718 if (j < level && 719 (j > new_level || level == new_level)) 720 new_level = j; 721 } 722 } 723 break; 724 case VID_NOTIFY_ZERO_BRN: 725 for (i = 0; i < vo->vo_numlevels; i++) 726 if (vo->vo_levels[i] == 0) { 727 new_level = 0; 728 break; 729 } 730 break; 731 } 732 if (new_level != level) { 733 vo_set_brightness(handle, new_level); 734 vo->vo_brightness = new_level; 735 } 736 737 out: 738 ACPI_SERIAL_END(video_output); 739 } 740 741 /* ARGSUSED */ 742 static int 743 acpi_video_vo_active_sysctl(SYSCTL_HANDLER_ARGS) 744 { 745 struct acpi_video_output *vo; 746 int state, err; 747 748 vo = (struct acpi_video_output *)arg1; 749 if (vo->handle == NULL) 750 return (ENXIO); 751 ACPI_SERIAL_BEGIN(video_output); 752 state = (vo_get_device_status(vo->handle) & DCS_ACTIVE) ? 1 : 0; 753 err = sysctl_handle_int(oidp, &state, 0, req); 754 if (err != 0 || req->newptr == NULL) 755 goto out; 756 vo_set_device_state(vo->handle, 757 DSS_COMMIT | (state ? DSS_ACTIVE : DSS_INACTIVE)); 758 out: 759 ACPI_SERIAL_END(video_output); 760 return (err); 761 } 762 763 /* ARGSUSED */ 764 static int 765 acpi_video_vo_bright_sysctl(SYSCTL_HANDLER_ARGS) 766 { 767 struct acpi_video_output *vo; 768 int level, preset, err; 769 770 vo = (struct acpi_video_output *)arg1; 771 ACPI_SERIAL_BEGIN(video_output); 772 if (vo->handle == NULL) { 773 err = ENXIO; 774 goto out; 775 } 776 if (vo->vo_levels == NULL) { 777 err = ENODEV; 778 goto out; 779 } 780 781 preset = (power_profile_get_state() == POWER_PROFILE_ECONOMY) ? 782 vo->vo_economy : vo->vo_fullpower; 783 level = vo->vo_brightness; 784 if (level == -1) 785 level = preset; 786 787 err = sysctl_handle_int(oidp, &level, 0, req); 788 if (err != 0 || req->newptr == NULL) 789 goto out; 790 if (level < -1 || level > 100) { 791 err = EINVAL; 792 goto out; 793 } 794 795 if (level != -1 && (err = acpi_video_vo_check_level(vo, level))) 796 goto out; 797 vo->vo_brightness = level; 798 vo_set_brightness(vo->handle, (level == -1) ? preset : level); 799 800 out: 801 ACPI_SERIAL_END(video_output); 802 return (err); 803 } 804 805 static int 806 acpi_video_vo_presets_sysctl(SYSCTL_HANDLER_ARGS) 807 { 808 struct acpi_video_output *vo; 809 int i, level, *preset, err; 810 811 vo = (struct acpi_video_output *)arg1; 812 ACPI_SERIAL_BEGIN(video_output); 813 if (vo->handle == NULL) { 814 err = ENXIO; 815 goto out; 816 } 817 if (vo->vo_levels == NULL) { 818 err = ENODEV; 819 goto out; 820 } 821 preset = (arg2 == POWER_PROFILE_ECONOMY) ? 822 &vo->vo_economy : &vo->vo_fullpower; 823 level = *preset; 824 err = sysctl_handle_int(oidp, &level, 0, req); 825 if (err != 0 || req->newptr == NULL) 826 goto out; 827 if (level < -1 || level > 100) { 828 err = EINVAL; 829 goto out; 830 } 831 if (level == -1) { 832 i = (arg2 == POWER_PROFILE_ECONOMY) ? 833 BCL_ECONOMY : BCL_FULLPOWER; 834 level = vo->vo_levels[i]; 835 } else if ((err = acpi_video_vo_check_level(vo, level)) != 0) 836 goto out; 837 838 if (vo->vo_brightness == -1 && (power_profile_get_state() == arg2)) 839 vo_set_brightness(vo->handle, level); 840 *preset = level; 841 842 out: 843 ACPI_SERIAL_END(video_output); 844 return (err); 845 } 846 847 /* ARGSUSED */ 848 static int 849 acpi_video_vo_levels_sysctl(SYSCTL_HANDLER_ARGS) 850 { 851 struct acpi_video_output *vo; 852 int err; 853 854 vo = (struct acpi_video_output *)arg1; 855 ACPI_SERIAL_BEGIN(video_output); 856 if (vo->vo_levels == NULL) { 857 err = ENODEV; 858 goto out; 859 } 860 if (req->newptr != NULL) { 861 err = EPERM; 862 goto out; 863 } 864 err = sysctl_handle_opaque(oidp, vo->vo_levels, 865 vo->vo_numlevels * sizeof(*vo->vo_levels), req); 866 867 out: 868 ACPI_SERIAL_END(video_output); 869 return (err); 870 } 871 872 static void 873 vid_set_switch_policy(ACPI_HANDLE handle, UINT32 policy) 874 { 875 ACPI_STATUS status; 876 877 status = acpi_SetInteger(handle, "_DOS", policy); 878 if (ACPI_FAILURE(status)) 879 kprintf("can't evaluate %s._DOS - %s\n", 880 acpi_name(handle), AcpiFormatException(status)); 881 } 882 883 struct enum_callback_arg { 884 void (*callback)(ACPI_HANDLE, UINT32, void *); 885 void *context; 886 ACPI_OBJECT *dod_pkg; 887 int count; 888 }; 889 890 static ACPI_STATUS 891 vid_enum_outputs_subr(ACPI_HANDLE handle, UINT32 level __unused, 892 void *context, void **retp __unused) 893 { 894 ACPI_STATUS status; 895 UINT32 adr, val; 896 struct enum_callback_arg *argset; 897 size_t i; 898 899 ACPI_SERIAL_ASSERT(video); 900 argset = context; 901 status = acpi_GetInteger(handle, "_ADR", &adr); 902 if (ACPI_FAILURE(status)) 903 return (AE_OK); 904 905 for (i = 0; i < argset->dod_pkg->Package.Count; i++) { 906 if (acpi_PkgInt32(argset->dod_pkg, i, &val) == 0 && 907 (val & DOD_DEVID_MASK_FULL) == 908 (adr & DOD_DEVID_MASK_FULL)) { 909 argset->callback(handle, val, argset->context); 910 argset->count++; 911 } 912 } 913 914 return (AE_OK); 915 } 916 917 static int 918 vid_enum_outputs(ACPI_HANDLE handle, 919 void (*callback)(ACPI_HANDLE, UINT32, void *), void *context) 920 { 921 ACPI_STATUS status; 922 ACPI_BUFFER dod_buf; 923 ACPI_OBJECT *res; 924 struct enum_callback_arg argset; 925 926 ACPI_SERIAL_ASSERT(video); 927 dod_buf.Length = ACPI_ALLOCATE_BUFFER; 928 dod_buf.Pointer = NULL; 929 status = AcpiEvaluateObject(handle, "_DOD", NULL, &dod_buf); 930 if (ACPI_FAILURE(status)) { 931 if (status != AE_NOT_FOUND) 932 kprintf("can't evaluate %s._DOD - %s\n", 933 acpi_name(handle), AcpiFormatException(status)); 934 argset.count = -1; 935 goto out; 936 } 937 res = (ACPI_OBJECT *)dod_buf.Pointer; 938 if (!ACPI_PKG_VALID(res, 1)) { 939 kprintf("evaluation of %s._DOD makes no sense\n", 940 acpi_name(handle)); 941 argset.count = -1; 942 goto out; 943 } 944 if (callback == NULL) { 945 argset.count = res->Package.Count; 946 goto out; 947 } 948 argset.callback = callback; 949 argset.context = context; 950 argset.dod_pkg = res; 951 argset.count = 0; 952 status = AcpiWalkNamespace(ACPI_TYPE_DEVICE, handle, 1, 953 vid_enum_outputs_subr, NULL, &argset, NULL); 954 if (ACPI_FAILURE(status)) 955 kprintf("failed walking down %s - %s\n", 956 acpi_name(handle), AcpiFormatException(status)); 957 out: 958 if (dod_buf.Pointer != NULL) 959 AcpiOsFree(dod_buf.Pointer); 960 return (argset.count); 961 } 962 963 static int 964 vo_get_brightness_levels(ACPI_HANDLE handle, int **levelp) 965 { 966 ACPI_STATUS status; 967 ACPI_BUFFER bcl_buf; 968 ACPI_OBJECT *res; 969 int num, i, n, *levels; 970 971 bcl_buf.Length = ACPI_ALLOCATE_BUFFER; 972 bcl_buf.Pointer = NULL; 973 status = AcpiEvaluateObject(handle, "_BCL", NULL, &bcl_buf); 974 if (ACPI_FAILURE(status)) { 975 if (status != AE_NOT_FOUND) 976 kprintf("can't evaluate %s._BCL - %s\n", 977 acpi_name(handle), AcpiFormatException(status)); 978 goto out; 979 } 980 res = (ACPI_OBJECT *)bcl_buf.Pointer; 981 if (!ACPI_PKG_VALID(res, 2)) { 982 kprintf("evaluation of %s._BCL makes no sense\n", 983 acpi_name(handle)); 984 goto out; 985 } 986 num = res->Package.Count; 987 if (num < 2 || levelp == NULL) 988 goto out; 989 levels = AcpiOsAllocate(num * sizeof(*levels)); 990 if (levels == NULL) 991 goto out; 992 for (i = 0, n = 0; i < num; i++) 993 if (acpi_PkgInt32(res, i, &levels[n]) == 0) 994 n++; 995 if (n < 2) { 996 AcpiOsFree(levels); 997 goto out; 998 } 999 *levelp = levels; 1000 return (n); 1001 1002 out: 1003 if (bcl_buf.Pointer != NULL) 1004 AcpiOsFree(bcl_buf.Pointer); 1005 return (0); 1006 } 1007 1008 static int 1009 vo_get_brightness(ACPI_HANDLE handle) 1010 { 1011 UINT32 level; 1012 ACPI_STATUS status; 1013 1014 ACPI_SERIAL_ASSERT(video_output); 1015 status = acpi_GetInteger(handle, "_BQC", &level); 1016 if (ACPI_FAILURE(status)) { 1017 kprintf("can't evaluate %s._BQC - %s\n", acpi_name(handle), 1018 AcpiFormatException(status)); 1019 return (-1); 1020 } 1021 if (level > 100) 1022 return (-1); 1023 1024 return (level); 1025 } 1026 1027 static void 1028 vo_set_brightness(ACPI_HANDLE handle, int level) 1029 { 1030 ACPI_STATUS status; 1031 1032 ACPI_SERIAL_ASSERT(video_output); 1033 status = acpi_SetInteger(handle, "_BCM", level); 1034 if (ACPI_FAILURE(status)) 1035 kprintf("can't evaluate %s._BCM - %s\n", 1036 acpi_name(handle), AcpiFormatException(status)); 1037 } 1038 1039 static UINT32 1040 vo_get_device_status(ACPI_HANDLE handle) 1041 { 1042 UINT32 dcs; 1043 ACPI_STATUS status; 1044 1045 ACPI_SERIAL_ASSERT(video_output); 1046 dcs = 0; 1047 status = acpi_GetInteger(handle, "_DCS", &dcs); 1048 if (ACPI_FAILURE(status)) 1049 kprintf("can't evaluate %s._DCS - %s\n", 1050 acpi_name(handle), AcpiFormatException(status)); 1051 1052 return (dcs); 1053 } 1054 1055 static UINT32 1056 vo_get_graphics_state(ACPI_HANDLE handle) 1057 { 1058 UINT32 dgs; 1059 ACPI_STATUS status; 1060 1061 dgs = 0; 1062 status = acpi_GetInteger(handle, "_DGS", &dgs); 1063 if (ACPI_FAILURE(status)) 1064 kprintf("can't evaluate %s._DGS - %s\n", 1065 acpi_name(handle), AcpiFormatException(status)); 1066 1067 return (dgs); 1068 } 1069 1070 static void 1071 vo_set_device_state(ACPI_HANDLE handle, UINT32 state) 1072 { 1073 ACPI_STATUS status; 1074 1075 ACPI_SERIAL_ASSERT(video_output); 1076 status = acpi_SetInteger(handle, "_DSS", state); 1077 if (ACPI_FAILURE(status)) 1078 kprintf("can't evaluate %s._DSS - %s\n", 1079 acpi_name(handle), AcpiFormatException(status)); 1080 } 1081